1․ Կրճատիր կոոտորակը․

1. 9/18 = 1/2

2. 8/10 = 4/5

3. 6/8 = 3/4

4. 5/20 = 1/4

5. 18/24 = 6/8 = 3/4

6. 6/9 = 2/3

8. 4/16 = 2/8 = 1/4

9. 18/36 = 9/18 = 1/2

10. 6/42 = 3/21 = 1/7

11. 13/39 = 1/3

12. 21/28 = 3/4

13. 66/77 = 9/11

15. 21/63 = 3/9

16. 30/84 = 5/14

17. 50/125 = 2/5

18. 72/108 = 8/12 = 2/3

19. 49/112 = 7/16

20. 240/320 = 3/4